0000000000053167

AUTHOR

Antonio Cremades

showing 4 related works from this author

CXCR7 Reactivates ERK Signaling to Promote Resistance to EGFR Kinase Inhibitors in NSCLC

2019

Abstract Although EGFR mutant–selective tyrosine kinase inhibitors (TKI) are clinically effective, acquired resistance can occur by reactivating ERK. We show using in vitro models of acquired EGFR TKI resistance with a mesenchymal phenotype that CXCR7, an atypical G protein-coupled receptor, activates the MAPK–ERK pathway via β-arrestin. Depletion of CXCR7 inhibited the MAPK pathway, significantly attenuated EGFR TKI resistance, and resulted in mesenchymal-to-epithelial transition. CXCR7 overexpression was essential in reactivation of ERK1/2 for the generation of EGFR TKI–resistant persister cells. Many patients with non–small cell lung cancer (NSCLC) harboring an EGFR kinase domain mutatio…

0301 basic medicineMAPK/ERK pathwayCancer ResearchLung NeoplasmsDrug ResistanceDrug resistanceTransgenicMiceChemokine receptor0302 clinical medicineNeoplasmsCarcinoma Non-Small-Cell LungReceptorsMedicineNon-Small-Cell LungCXCRReceptorLungbeta-ArrestinsCancerEGFR inhibitorsTumorKinaseLung CancerErbB ReceptorsOncology5.1 Pharmaceuticals030220 oncology & carcinogenesisDevelopment of treatments and therapeutic interventionsTyrosine kinaseEpithelial-Mesenchymal TransitionMAP Kinase Signaling SystemOncology and CarcinogenesisMice TransgenicArticleCell LineExperimental03 medical and health sciencesClinical ResearchCell Line TumorAnimalsHumansOncology & CarcinogenesisProtein Kinase InhibitorsReceptors CXCRbusiness.industryCarcinomaNeoplasms Experimentalrespiratory tract diseases030104 developmental biologyProtein kinase domainDrug Resistance NeoplasmMutationCancer researchNeoplasmbusinessCancer Research
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Translocation (X;18) in a Biphasic Synovial Sarcoma with Morphologic Features of Neural Differentiation

1998

The authors report a recurred neoplasm showing distinctive histologic, immunophenotypic, and ultrastructural features characteristic of biphasic synovial sarcoma with neural differentiation. The features include areas with a growth pattern of densely packed spindle cells in irregularly intersecting, broad fascicles, diffuse vimentin and HBA 71 immunoreactivity, expression of S-100 protein, and other neural markers. Moreover, areas with glandular structures and cellular expression of cytokeratin and epithelial membrane antigen were noted. Additionally, areas of neural-like growth pattern were positive for neuron-specific enolase, HNK-1, and protein gene product 9.5. Furthermore, cytogenetic …

AdultMaleLung NeoplasmsX ChromosomeBiphasic Synovial SarcomaEnolaseSoft Tissue NeoplasmsChromosomal translocationVimentinPolymerase Chain ReactionTranslocation GeneticImmunophenotypingPathology and Forensic MedicineGene productSarcoma SynovialCytokeratinTumor Cells CulturedmedicineHumansMolecular BiologyIn Situ Hybridization FluorescenceNeuronsmedicine.diagnostic_testbiologyChemistryCell DifferentiationPatellaCell BiologyMolecular biologyReverse transcription polymerase chain reactionKaryotypingbiology.proteinChromosomes Human Pair 18Fluorescence in situ hybridizationDiagnostic Molecular Pathology
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Atypical Pleomorphic Extraosseous Ewing Tumor/Peripheral Primitive Neuroectodermal Tumor with Unusual Phenotypic/Genotypic Profile

2002

A pleomorphic undifferentiated tumor primarily located in the retroperitoneum with a phenotype compatible with an extraosseous Ewing tumor/peripheral primitive neuroectodermal tumor (ET/pPNET) pattern and unusual molecular features is described. Immunohistochemically, HBA-71 (CD99/mic2) and several neural markers were intensively expressed together with scattered cells expressing carcinoembryonic antigen (CEA). Short-term culture showed biphasic neuroblastic and epithelioid cell populations, with the latter expressing germ cell markers (CEA, alpha-fetoprotein, and the beta-subunit of chorionic gonadotrophin). Conventional cytogenetics displayed several chromosomic rearrangements, especially…

AdultMalePathologymedicine.medical_specialtyOncogene Proteins FusionChromosomes Human Pair 22CD99Soft Tissue NeoplasmsChromosomal translocationSarcoma EwingBiologyTranslocation GeneticPathology and Forensic MedicineExonFatal OutcomeCarcinoembryonic antigenBiomarkers TumorTumor Cells CulturedmedicineHumansNeuroectodermal Tumors PrimitiveRetroperitoneal NeoplasmsMolecular BiologyGene Rearrangementmedicine.diagnostic_testReverse Transcriptase Polymerase Chain ReactionPeripheral Primitive Neuroectodermal TumorChromosomes Human Pair 11Neoplasms Second PrimaryDNA NeoplasmCell BiologyGenes p53Chromosome Bandingmedicine.anatomical_structureKaryotypingMutationbiology.proteinEpithelioid cellGerm cellFluorescence in situ hybridizationDiagnostic Molecular Pathology
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Activity and immunohistochemistry of DT-diaphorase in hamster and human kidney tumours.

1994

We have studied the biochemical and immunohistochemical changes of DT-diaphorase in diethylstilbestrol (DES)-induced hamster kidney tumours and human biopsies from normal kidneys and renal clear cell carcinoma. The activities of primary and secondary antioxidants in these hamster and human tissues are also reported. DT-diaphorase is decreased in the different subcellular fractions of hamster and human tissues. In hamster kidney the activities of the one-electron quinone reductases show a nearly two-fold increase. Immunohistochemical findings confirm the decrease in DT-diaphorase in hamster and human tissues. This image is of special interest in the case of nephroblastoma (Wilms' tumour), si…

MaleCancer ResearchPathologymedicine.medical_specialtyDiethylstilbestrolHamsterBiologyKidneychemistry.chemical_compoundCricetinaemedicineNAD(P)H Dehydrogenase (Quinone)AnimalsHumansDiethylstilbestrolchemistry.chemical_classificationKidneyGlutathione PeroxidaseMesocricetusSuperoxide DismutaseGlutathione peroxidaseWilms' tumorGeneral Medicinemedicine.diseaseMolecular biologyImmunohistochemistryKidney NeoplasmsClear cell renal cell carcinomamedicine.anatomical_structurechemistryGlutathione disulfideImmunohistochemistryRabbitsmedicine.drugCarcinogenesis
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